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Finding the Fourth Proportional to 144,333.84, 216,697.10 and 81,198.39

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Solution

The fourth proportional to 144,333.84, 216,697.10 and 81,198.39 is: 121,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,333.84 : 216,697.10 = 81,198.39 : x
  2. Step 2: Convert to fraction form
    144,333.84/216,697.10 = 81,198.39/x
  3. Step 3: Cross multiply
    144,333.84x = 216,697.10 × 81,198.39
  4. Step 4: Simplify right side
    144,333.84x = 17,595,455,637.67
  5. Step 5: Solve for x
    x = 17,595,455,637.67/144,333.84
  6. Step 6: Final answer
    x = 121,908.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.